JPS5882636A - Method for fitting of piston to swash plate - Google Patents

Abstract

PURPOSE:To enhance the effectiveness in assembly, in relation to the method for automatically assembling a piston to the swash plate of a compressor for car cooler, by feeding a piston intermittently and fixing it, and inserting ball and slipper in the notch and fitting then on the swash plate. CONSTITUTION:A piston 3 is fed by an intermittent feed device, and the fixing part's upper side 16 sinks to be fixed to the fixing part 17. A slipper 7 is sent in the recess 11a in the lifting part 11 by a slide supply device while a ball 6 is supplied in the transverse direction driven by a pusher 26, and in the condition that the ball 6 and slipper 7 are set, heaving action of the lower situated lifting part 11 shall shut a guide plate 15 against the pressure of a spring 14, and thus it is assembled in the recess 3C in the piston 3. Then it is sent to a guide rail 21 coupled with the guide plate 15 to be fitted on the swash plate.

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention relates to a method for assembling a piston to a swash plate for forming a swash plate compressor for a car cooler.

Previously, the piston with the ball slipper attached to the swash plate had to be assembled by highly skilled workers, resulting in inefficiency.

SUMMARY OF THE INVENTION It is an object of the present invention to provide a method of assembling a piston to a swash plate which eliminates the above-mentioned conventional drawbacks, and which is extremely easy to assemble and can realize automatic assembly of the piston to the swash plate.

That is, in the present invention, two sets of a rolling element and a sliding element are assembled in a groove of a piston facing each other, and the above-mentioned assembly is inserted between the sets on a guide rail along the guide rail. The piston is moved together with the rolling element and the sliding element to twist the end of the guide 1/-ru to supply the piston to the swash plate installed at the end, and the piston is held at that position and the swash plate is rotated. The piston is assembled to the swash plate by rotating and stepping around the swash plate shaft to which the piston is attached.

Embodiments of the present invention will be specifically described below based on the drawings. FIG. 1 is a block diagram of a swash plate compressor, and the cylinder portion is shown within the thick line frame. The cylinder part is cylinder F1. A piston 5 fitted into the cylinder R2-1 and the cylinder F1 and R2-, a swash plate 5 fixed to the swash plate shaft 4 at an angle. A ball (rolling element) 6 and a sliver (sliding element) 7 are installed between the swash plate 5 and the groove formed in the piston 6.
．． A thrust bearing 8.9 fitted to the swash plate shaft 4 is also provided between the swash plate 5 and the cylinder R2, and between the swash plate 5 and the cylinder F1.

Mechanically, by rotating the swash plate shaft 4, the swash plate 5 rotates, and the piston 5 reciprocates inside the holes of the cylinders F1 and R2. Furthermore, since the five pistons 5 perform compression at both ends during reciprocating motion, a six-cylinder mechanism is provided.

°The present invention provides two rolling elements 6 in this swash plate compressor.
This realizes automatic assembly of the two sliding bodies 7 to the piston 5.

FIG. 2 is a perspective cross-sectional view showing an embodiment of an automatic assembly device for rolling elements and sliding elements to a piston according to the present invention. This assembly device includes a moving member 9. Ring pufferfish 14. Guide plate 15. A fixing part upper side 16 and a fixing part lower side 17 are provided. The moving member 9 has a shell shape and reciprocates in the vertical direction along the guide rail 1B, and has a single drive direction (not shown).
is connected to. Oshiage! B11 has a plate-shaped sliding body (
A cylindrical concave surface 11 (Z) supporting the sliver) 7.

A cylindrical concave surface 11A supporting a rolling element (ball) 6 is formed with steps of different diameters, and a groove 11C is formed in the middle.
[The piece 13 is supported so as to be slidable in the horizontal direction against the pressing force of the spring 12, and its lower end is connected to the upper end of the moving member 9 by a link 10. Oshiage these! A pair of guide grooves 19 are formed at the upper end of the guide rail 18 to guide the B11 vertically and slidably. At the upper end of the central wall forming the pair of guide grooves 19, a guide plate 15 is installed which is swingably supported so as to be opened by the pressing force of the spring 14. The fixed lower side 17 is the piston 6
A guide groove is formed in which both ends of the piston are fitted to position the piston in the axial direction, and the piston can be moved horizontally along the guide groove.

Further, the upper end surface of the guide plate 15 is engaged with the flat surface 5b of the groove 5α of the piston 3, thereby positioning the piston in the rotational direction. The upper part 16 of the fixing part has a cylindrical recess formed on its lower surface, and when lowered, the piston 6 is pressed against the lower part 17 of the fixing part 17 and fixed. Furthermore, recesses 3C are formed at both ends of the groove 5α of the piston 5, in which the rolling elements 6 are engaged. - 2 so as to supply the sliding body 7 to the concave surface 11α of the push-up part 11 in the fully depressed state.
As shown by the dotted chain line, a guide groove 20 extending obliquely forward is provided, and in front of the guide groove 20, a feeding device (not shown) for feeding the sliding bodies 7 one by one from the parts feeder 21 for sliding bodies is installed. ing.

An L-shaped passage 25 is formed from the side to the top so as to feed the concave surface 1hK of the pushing part 11 which is in a lowered state, and the rolling element 6 is moved upward by the reciprocating linear movement of the pusher 26. It is configured to feed one piece at a time.

With the above configuration, the piston 5 is first fed along the guide groove on the lower fixed side 17 and set at the assembly position. Next, the upper fixed part 16 descends, and the lower fixed parts 16, 17
The piston 6 is fixed by this.

Next, the sliding body (slip 7) is transferred from the sliding body supply device 25 to the concave surface 11a of the push-up part 11.
6 is driven, rolling elements (balls) 6 are supplied, and with the rolling elements 6 and sliding elements 7 shielded, they are pushed up to the lower push-up part 11, thereby being guided against the pressing force of the spring 14. When the plate 15 is closed and the rolling element 6 engages with the recess 5CK on both end faces of the groove 6α of the piston 6, it is pressed by the suge ring 14, and the piece 13 is pressed against the spring 1.
2, the rolling elements 6 are retracted by the pressing force of the piston 6.
is properly assembled into the recess 6C. Next, even if the push-up part 11 is lowered, the state in which the rolling elements 6 and sliding elements 7 are assembled to the piston 6 due to the spring 14 does not change, and the pin 3 of the rolling elements 6 and sliding elements 7 does not change. The assembly is complete.

Next, a guide rail 21 connected to the guide plate 15 extends horizontally. Then, as shown in FIG. 5, the piston 6, which is assembled with the rolling elements 6 and sliding elements 7 sandwiched between the trap guide rail 21, is moved by the link 22 while maintaining the same posture as shown in the trajectory A. A number of pawls 26 connected at equal intervals transport each piston 5 by peach feeding. 22 is A
This is a base that supports the axes of point, point 1, and point F.

Reference numeral 60 denotes a link serving as an input node to which a one-rotation drive source (not shown) is connected and the axis at point A is fixed to one end.

Reference numeral 24 designates a link that is a hollow-shaped intermediate node, and is rotatably connected to the other end of the link 6o by a pin provided at point B, and protrudes above the link 22 by a pin provided at point D. - Rotatably connected to other parts. A link 27 rotatably connects point F of the base 22 and point 0 of the intermediate link 24. Reference numeral 28' denotes a link having a shape of "1", which is rotatably connected to the upwardly projecting portion of the link 22 at the H point. 28 is one point of base 22 and link 27
This is a link that rotatably connects the six points. 29 is a link that rotatably connects point E of link 24 and one point of link 27 of the intermediate node.

and (, 'F = GJ, HG = butt', IG =
E.C.

IP = button = IiD = IE, AE, BC and C
If the lengths of D, CE, CF, and AF are appropriately determined, and the beach of the claw 25 is appropriately determined, the claw 25 can be moved like the trajectory A by rotating the input node 25 like the trajectory B. Next, a device for assembling the piston 3 to the swash plate 5 will be explained in detail with reference to FIG. That is, the slide base 51 is configured to reciprocate in the direction of the arrow (■). Therefore, first, the slide base 51 is slid to avoid contact with the front portion 4α of the swash plate shaft 4. Next, the rear part 4h of the swash plate shaft 4 is inserted a certain amount into the great circle formed at the left end of the rotation shaft 55, and the swash plate 5
Rotate the swash plate 5 so that the top end of the swash plate 5 is the closest to the slide base 5.
1, so that the smallest end of the swash plate 5 approaches the fixed base 57 the most. After this slide base 5
1 to the right, the front part 4a of the swash plate shaft 4 is inserted into the hole formed at the right end of the slide base 31, and the plate 5214 fastened to the slide base 51 is inserted into the cylinder 63 to which the plate 5214 is attached. It is held by the pressing force of the output load 54. Thereby, the swash plate 5 is fixed in a non-rotating state.

A gripper 38 is formed at the left end so as to grip the piston 5, and a joint member 4o in the shape of a mouth fixed to the left end surface of the flange 36 is slidably formed with dovetail or the like, and the cylinder 41 is A cylinder mounting portion 59 configured to be attached thereto, and a collar-shaped stop bar 42' formed to loosely fit into a hole formed at the left end of the coupling member 40 and stopped by coming into contact with the left end of the coupling member 40. The shaft portion 42 is formed integrally with the shaft portion 42 . Then, when the output load of the cylinder 41 is reduced, the straight-travel portion 45 integrally formed with this output load travels straight, and travels straight through the bin 44 provided in the straight-travel FAaS. Then, the U-shaped groove part 46 of the griever 45 is guided to the bin 44 of the straight-travel part 43, and the griever 45
7 as the center, and clamps the piston 5, which has already been conveyed to a point and is stopped, together with the bar 58. The grill lever 45 is configured to open sufficiently wide so that the piston 5 does not come into contact with the guide rail 21 when it passes through points R and Q and is conveyed to point N. Furthermore, the grip 9 bar 68 performs a prismatic movement (a linear movement without rotation) with respect to the coupling member 4o.This movement is caused by the expansion of the spring 48 so that it moves to the left when no load is applied. It is stopped by a striking bar 42.

Furthermore, six grip bars that hold these pistons 3 are installed on the flange 56 of the one-rotation shaft 55 at positions S, T, and U at intervals of 120 degrees.

However, the piston 6 is assembled with the ball 6 and the pickpocket 9 puff on both sides, and its end is twisted by the movement of the pawl 25, and guided by the guide rail 21 connected to the swash plate 5, to point R and point Q. is conveyed to the point where it passes through and is assembled into the swash plate 5.

Then, when the piston 6 comes into contact with the grip 9 bar 68 already on standby and receives a signal from a detection means (not shown) that detects the movement of the pawl 23, the cylinder 41 is actuated and the grip is moved.
The piston 6 is held by closing the cover 45. After this, the rotating shaft 5
5 rotates 120 degrees in the direction of arrow 1 about the fixed base 57, the disk 56 integrated with the rotation shaft 55 rotates, and the piston 6 also rotates from point L to point 1. In this manner, the piston 6 is rotated while being incorporated into the swash plate 5, compressing the spring 48 and retracting the griper to the right. At the same time, the piston 6 is also conveyed by the claws 25 on the guide rail 21, reaches the point Q, is installed, and is held by the gripper.

The disk 66 rotates 120 degrees together with the rotating shaft 35, and moves from point 2 to point L.

Similarly, the piston 3 with the third grain is transported, reaches the point where it is installed, and is held by the grip bar.

With this, the three pistons holding the balls and slivers are set on concentric circles on the swash plate 5 at 120 degree intervals in a posture parallel to the swash plate axis.

4a is released, the slide rail 51 is moved to the left, and the fixed base 57 is mounted on the member (not shown).
Rotate 90 degrees, shade so that the axis of the swash plate shaft 4 is vertical, insert and hold the front part 4a of the swash plate shaft 4 from above, and loosely fit the front part of the piston B. A clamping chuck (not shown) descends to hold the swash plate 5, lifts it and transfers it to the location where the cylinder 2 is installed, and then lowers it to install it in the cylinder 2 at the same time as the piston. did.

As explained above, according to the present invention, a piston with a ball sliver, etc. assembled thereon can be automatically assembled on a swash plate, and efficiency can be greatly improved.

[Brief explanation of drawings]

Figure 1 is Figure 2 showing the configuration of a swash plate compressor according to the present invention.
．． Fig. 2 is a perspective central sectional view showing an embodiment of the device for assembling balls and slivers to a piston according to the present invention, and Fig. 5 shows a piston assembled with the device shown in Fig. 2 on a swash plate. FIG. 4 is a perspective view showing an embodiment of a device for assembling a piston to a swash plate according to the present invention. Explanation of symbols 1... Cylinder F 2... Cylinder R3...
・Piston 4... Swash plate shaft 5... Swash plate
6...Ball (rolling element) 7...Sleeve (sliding element) 21. ,,Guidance rail 22...link
25°°°claw 51...slide rail
58,45. ,・Clipper 35...rotation axis
・・Isuku agent patent attorney Susuki 1) Toshi Koya 11

Claims (1)

[Claims] Assemble a 2 m long pair of rolling elements and sliding elements facing each other in the groove of the piston, and insert the piston along the guide rail with the pairs sandwiched between the pairs. The piston is moved along with the body, twisting the end of the guide rail, feeding the piston to the swash plate installed at the end of the guide rail, holding the piston in that position, and rotating around the swash plate shaft to which the swash plate is attached. A method for assembling a piston to a swash plate, the method comprising assembling the piston to the swash plate by rotationally advancing the piston.